California State Teachers Retirement System (CalSTRS)
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California State Teachers Retirement System (CalSTRS)’s SIGA Technologies SIGA Stock Holding History

California State Teachers Retirement System (CalSTRS)’s Portfolio SIGA Stock Details SIGA Fund Activity
Bought
Maintained
Sold
Quarter Market Value Status Shares Change in
Stake 		Trade Value Portfolio Weight Portfolio Position
2026
Q1 		$11.9K Sell
2,223
-37,222
-94% -$232K ﹤0.01% 2621
2025
Q4 		$241K Sell
39,445
-829
-2% -$5.9K ﹤0.01% 2221
2025
Q3 		$369K Buy
40,274
+2
+0% +$16 ﹤0.01% 2176
2025
Q2 		$263K Hold
40,272
– – ﹤0.01% 2223
2025
Q1 		$221K Hold
40,272
– – ﹤0.01% 2293
2024
Q4 		$242K Sell
40,272
-339
-0.8% -$2.27K ﹤0.01% 2328
2024
Q3 		$274K Sell
40,611
-1,292
-3% -$11.3K ﹤0.01% 2327
2024
Q2 		$318K Sell
41,903
-1,040
-2% -$8.47K ﹤0.01% 2280
2024
Q1 		$368K Sell
42,943
-2,562
-6% -$14.6K ﹤0.01% 2296
2023
Q4 		$255K Buy
45,505
+691
+2% +$3.7K ﹤0.01% 2421
2023
Q3 		$235K Sell
44,814
-5,444
-11% -$26.8K ﹤0.01% 2477
2023
Q2 		$254K Sell
50,258
-5,687
-10% -$32.3K ﹤0.01% 2514
2023
Q1 		$322K Sell
55,945
-932
-2% -$6.23K ﹤0.01% 2475
2022
Q4 		$419K Sell
56,877
-207
-0.4% -$1.81K ﹤0.01% 2417
2022
Q3 		$588K Sell
57,084
-959
-2% -$15.4K ﹤0.01% 2254
2022
Q2 		$672K Sell
58,043
-931
-2% -$8.39K ﹤0.01% 2211
2022
Q1 		$418K Sell
58,974
-5,942
-9% -$39.8K ﹤0.01% 2457
2021
Q4 		$488K Sell
64,916
-580
-0.9% -$4.42K ﹤0.01% 2514
2021
Q3 		$484K Sell
65,496
-2,995
-4% -$19.2K ﹤0.01% 2471
2021
Q2 		$430K Sell
68,491
-10,394
-13% -$71.4K ﹤0.01% 2731
2021
Q1 		$513K Hold
78,885
– – ﹤0.01% 2513
2020
Q4 		$573K Hold
78,885
– – ﹤0.01% 2353
2020
Q3 		$542K Sell
78,885
-6,912
-8% -$47K ﹤0.01% 2231
2020
Q2 		$507K Hold
85,797
– – ﹤0.01% 2238
2020
Q1 		$410K Buy
85,797
+981
+1% +$4.78K ﹤0.01% 2167
2019
Q4 		$405K Hold
84,816
– – ﹤0.01% 2456
2019
Q3 		$434K Hold
84,816
– – ﹤0.01% 2388
2019
Q2 		$482K Buy
84,816
+3,815
+5% +$21.1K ﹤0.01% 2386
2019
Q1 		$487K Hold
81,001
– – ﹤0.01% 2328
2018
Q4 		$640K Buy
81,001
+1,029
+1% +$5.88K ﹤0.01% 2148
2018
Q3 		$551K Buy
79,972
+525
+0.7% +$3.85K ﹤0.01% 2402
2018
Q2 		$472K Buy
+79,447
New +$516K ﹤0.01% 2477
2014
Q2 		– Sell
-66,201
Closed -$205K – 3075
2014
Q1 		$205K Hold
66,201
– – ﹤0.01% 2881
2013
Q4 		$216K Hold
66,201
– – ﹤0.01% 2864
2013
Q3 		$254K Buy
66,201
+2,137
+3% +$7.31K ﹤0.01% 2781
2013
Q2 		$182K Buy
+64,064
New +$215K ﹤0.01% 2876

Other funds holding SIGA

BlackRock
BlackRock New York $5.72T AUM 30.48% 1-Year Est. Return
Dimensional Fund Advisors
Dimensional Fund Advisors Austin, Texas $481B AUM 30.42% 1-Year Est. Return
AC
AltraVue Capital Bellevue, Washington $1.16B AUM 46.45% 1-Year Est. Return
VCM
Vanguard Capital Management Malvern, Pennsylvania $4.04T AUM
Arrowstreet Capital
Arrowstreet Capital Boston, Massachusetts $185B AUM 39.58% 1-Year Est. Return
American Century Companies
American Century Companies Kansas City, Missouri $194B AUM 35% 1-Year Est. Return
Geode Capital Management
Geode Capital Management Boston, Massachusetts $1.61T AUM 30.72% 1-Year Est. Return
AQR Capital Management
AQR Capital Management Greenwich, Connecticut $218B AUM 29.41% 1-Year Est. Return
State Street
State Street Boston, Massachusetts $2.9T AUM 29.55% 1-Year Est. Return
FWSM
First Wilshire Securities Management Pasadena, California $444M AUM 42.88% 1-Year Est. Return

California State Teachers Retirement System (CalSTRS)'s SIGA Position: Q1 2026 in Review

California State Teachers Retirement System (CalSTRS) reduced its SIGA Technologies (SIGA) stake by 94% in Q1 2026, selling an estimated $232K and leaving 2,223 shares worth $11.9K. The position accounts for ﹤0.01% of the portfolio, ranked #2621.

California State Teachers Retirement System (CalSTRS) first reported a position in SIGA in Q2 2013 and has held it in 36 quarters since. The position peaked at $672K in Q2 2022. 183 funds tracked by Wall St. Rank hold SIGA as of Q1 2026.

  • California State Teachers Retirement System (CalSTRS) held 2,223 shares of SIGA Technologies worth $11.9K as of Q1 2026.
  • California State Teachers Retirement System (CalSTRS) sold 37,222 SIGA Technologies shares in Q1 2026, an estimated $232K.
  • SIGA Technologies made up ﹤0.01% of California State Teachers Retirement System (CalSTRS)'s portfolio in Q1 2026, its #2621 holding.
  • California State Teachers Retirement System (CalSTRS) first reported a position in SIGA Technologies in Q2 2013 and has held it in 36 quarters since.
  • California State Teachers Retirement System (CalSTRS)'s SIGA Technologies position peaked at $672K in Q2 2022.
  • 183 funds tracked by Wall St. Rank held SIGA Technologies as of Q1 2026.

Based on California State Teachers Retirement System (CalSTRS)'s 13F filing for Q1 2026, filed 18 May 2026.